Speed compensation scheme for reading MICR data
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United States of America Patent
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-
Oct 4, 1988
Grant Date -
N/A
app pub date -
Nov 16, 1987
filing date -
Nov 16, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and apparatus for providing a speed compensation scheme for reading MICR data on a document. The magnetic waveform for a character is sampled at periodic rates and converted to first bytes of data which are placed in a first memory. The velocity of the document is sampled at second periodic rates and the instantaneous values of the speed of the document are placed in a second memory as second bytes of data. A processor is used to remove the second bytes of data from memory and to calculate an average speed of the document for an associated examining window consisting of a predetermined number of the first bytes of data. The width of the examining window is adjusted in accordance with the average speed compared to an anticipated normal speed.
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